diff --git a/README.md b/README.md
index 34fd2df..e558c97 100644
--- a/README.md
+++ b/README.md
@@ -3,7 +3,7 @@
 ## Prerequisites
 
 1. Install a rust stable toolchain: `rustup install stable`
-1. Install a rust nightly toolchain: `rustup install nightly`
+1. Install a rust nightly toolchain with the rust-src component: `rustup toolchain install nightly --component rust-src`
 1. Install bpf-linker: `cargo install bpf-linker`
 
 ## Build eBPF